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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _NET_ALIGNED_DATA_H
3#define _NET_ALIGNED_DATA_H
4
5#include <linux/atomic.h>
6#include <linux/types.h>
7
8/* Structure holding cacheline aligned fields on SMP builds.
9 * Each field or group should have an ____cacheline_aligned_in_smp
10 * attribute to ensure no accidental false sharing can happen.
11 */
12struct net_aligned_data {
13 atomic64_t net_cookie ____cacheline_aligned_in_smp;
14#if defined(CONFIG_INET)
15 atomic_long_t tcp_memory_allocated ____cacheline_aligned_in_smp;
16 atomic_long_t udp_memory_allocated ____cacheline_aligned_in_smp;
17#endif
18};
19
20extern struct net_aligned_data net_aligned_data;
21
22#endif /* _NET_ALIGNED_DATA_H */